<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style>
        
    </style>
</head>
<body>
    
</body>
<script>
    
    // alert("hello alert")

    // document.write("hello write")
    
    // console.log("hello log")



    // alert( {} );
    // alert( {name:"admin"} );

    // document.write( {} )
    // document.write( {nameh:"admin"} )

    // console.log( {} )
    // console.log( {name:"admin"} )



    // alert("hello", "world")

    // document.write("hello", "world")

    // console.log("hello", "world")


    document.write("<mark>hello&nbsp;&nbsp;&nbsp;&nbsp;world</mark><br>");
    document.write("<br>")

    document.write("<mark>hello world</mark><br>");
    document.write("<br>")
    
    document.write("<mark>hello world</mark><br>");
    document.write("<br>")
    
    document.write("<mark>hello world</mark><br>");
    document.write("<br>")

    document.write("&lt;mark&gt;hello world&lt;/mark&gt;<br>");


    
</script>
</html>